WSP05556

• File Number: 8449.600
• Description: South Platte Projects - Chatfield Dam and Lake
• State: CO
• Basin: South Platte
• Date: 1/1/1967
• Author: Black and Vetch
• Title: Report on Chatfield Project for Board of Water Commissioners City and County of Denver
• Water Supply Pro - Doc Type: Publication

"

place undisturbed is considered due to the infrequent inundation
of a small section of the conduit, Since internal water pressure

would exceed external pressure, flood waters would not enter the

conduit, Infrequent flooding should have no deleterious effects.

The Corps has agreed to locate the new highway embankment to pre-

clude any adverse effect on Conduit 20 if left in place.

~. Relocation of Conduit 10 to the west as proposed by the Corps

except to run the conduit around Deer Creek Valley at elevation

5500; relocation of Conduit 10 to the west except to run the con-

duit across Deer Creek Valley in natural ground; or relocation of

Conduit 10 to the ea.st, including a section of Conduit 27, and

tying into Conduit 10 below Chatfield Dam.

Relocation of Conduit 10 around Deer Creek Valley will re-

move the conduit from any effects by the Chatfield Project. The

estimated cost of relocating Conduit 10 as a 48 inch line from

Kassler Plant to below Chatfield Dam under this alternative is

$2,756,000, including the clearwe11 and pumping station. Operation

and maintenance expenses for the Conduit 10 Pumping Station would

increase $2,200 to a total of $116,200 annually.

Relocation of Conduit 10 in natural ground across 'Deer Creek

Valley generally parallel to Conduit 20 is considered as an alter-

native because the conduit will be inundated very infrequently.

Estimated cost of the Conduit 10 as a 48 inch line, clearwell, and

pumping station is $2,375,000. Operation and maintenance expenses

would be the same as for the Corps plan, $114,000 annually.

"

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